Micrhystridium |
Micrhystridium vulgare
|
USA(Eastern) |
Silurian |
|
Navifusa |
Navifusa scrutilla
sp. nov. |
USA |
Wenlockian |
|
Neoveryhachium |
Neoveryhachium carminae
|
USA |
Silurian |
|
Neoveryhachium |
Neoveryhachium neocarminae
sp. nov. |
USA |
Silurian |
|
Onondagella |
Onondagella asymmetrica
|
USA |
Silurian |
|
Onondagella |
Onondagella deunffii
|
USA |
Silurian |
|
Phoenisphaeridium |
Phoenisphaeridium interpositum
|
Nd |
Nd |
|
Phoenisphaeridium |
Phoenisphaeridium involutum
|
Nd |
Nd |
|
Polydeunffia |
Polydeunffia eisenackii
|
USA |
Silurian |
|
Polyedryxium |
Polyedryxium rabians
|
USA |
Silurian |
|
Pterospermopsis |
Pterospermopsis helios
|
Nd |
Nd |
|
Pterospermopsis |
Pterospermopsis martinii
|
USA |
Silurian |
|
Pterospermopsis |
Pterospermopsis onondagaensis
|
USA |
Silurian |
|
Pulvinosphaeridium |
Pulvinosphaeridium oligospinosum
|
USA(Eastern) |
Early Gothlandian |
|
Quadraditum |
Quadraditum
|
Nd |
Nd |
|
Quadraditum |
Quadraditum fantasticum
|
Nd |
Nd |
|
Quadraditum |
Quadraditum incisum
|
USA |
Silurian |
|